Two components of the Spurs’ bench who turned into starters during the playoffs will be free agents.

The $3.5 million and $847,000 bargain contracts of Patty Mills and Jonathon Simmons will soon be high-priced salaries.

The Spurs have the ability to sign both players – Bird rights for Mills and restricted free agency for Simmons – but will need to weigh the financial consequences.

Mills, a backup in his six seasons with San Antonio, is ranked eighth by The Vertical in a solid free-agent class of point guards.

But can Mills be the Spurs’ point guard of the future?

Having never averaged more than 21 minutes a season, Mills’ play was sporadic when his minutes increased during the playoffs.

With the emergence of rookie Dejounte Murray, the Spurs could have their backup point guard next year at a fraction of what Mills will cost.

Thrust into the starting lineup because of Kawhi Leonard’s ankle injury, Simmons emerged during the playoffs as a solid two-way player.

Simmons has early Bird rights and can be signed by the Spurs, who also can match any offer sheet, to a contract that starts at $7.7 million or with cap space.

Teams wishing to sign Simmons cannot offer a contract more than the $8.4 million mid-level exception in the first year.

Teams can take available cap space and sign Simmons to a contract in which the first two years are a reflection of the full mid-level exception, with the last two years being back-loaded at a higher salary.

Simmons’ offer sheet with a team that has $10.3 million in cap space would look like this:

Year 1: $8.4 million Year 2: $8.8 million Year 3: $12 million Year 4: $12 millionTotal: $41.2 million Avg.: $10.3 million

San Antonio would have the right to match the offer sheet and average ($10.3 million per year) the contract over four years for cap purposes.

Under the 2011 CBA, San Antonio would have had a $12 million cap hit in the final two years of the deal.

Patty Mills is in line to earn more than the $3.5 million he made this season. (AP)

Keep an eye on 2018

How the Spurs spend money on their own free agents or create cap space this summer will have an impact next year.

Entering the 2018 offseason, San Antonio should only have four players under contract: LaMarcus Aldridge, Kawhi Leonard, Danny Green and Dejounte Murray, with Kyle Anderson being a restricted free agent.

Those four players total $52 million in guaranteed contracts, so San Antonio could have $40 million in cap space next summer.

However, to retain that room, San Antonio needs to be cautious in how it builds its bench this offseason.

San Antonio’s management excels at creating cap space when the options are limited.

The Spurs have entered free agency for two consecutive seasons with no cap space and yet signed LaMarcus Aldridge and Pau Gasol.

This July will be no different for the Spurs, but perhaps more challenging.

San Antonio has $90 million-plus in guaranteed contracts, not including the $33 million in free-agent holds for Ginobili, Mills and Simmons.

With the likelihood of Pau Gasol opting into his contract, San Antonio would need to move the contracts of Gasol and Parker if they wish to create room.

June draft picks

San Antonio has its own first-round pick.

The Spurs also have the No. 59 pick in the second round.

Future draft picks

The Spurs own all their future first-round picks.

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